chapter 16 review kaitlyn

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Across
  1. 2. number atom is the sum of the number of protons and the number of neutrons in the nucleus of an atom
  2. 4. protons and neutrons are composed of smaller particles
  3. 9. cloud the area around the nucleus of an atom where electrons are most likely to be found.
  4. 11. dot diagram uses the chemical symbol of an element surrounded by dots to represent the number of electrons in the outermost energy level
  5. 12. smallest particle of an element that retains the element's properties.
  6. 14. positively charged center of the atom
  7. 15. particles in the nucleus with an electric charge 1+
Down
  1. 1. atoms of the same element that have different numbers of neutrons
  2. 3. atomic mass and element is the weighed average mass of all naturally occurring isotopes of an element
  3. 5. particles with an electric charge of 1-
  4. 6. table the elements are arranged by increasing atomic number not atomic mass
  5. 7. the horizontal rows of elements in the periodic
  6. 8. number the number of protons in an atoms nucleus is equal
  7. 10. electrically neutral particles in the nucleus they don't have a charge
  8. 13. the vertical columns in the periodic table